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A small candle, 2.5 cm in size is placed...

A small candle, 2.5 cm in size is placed at 27 cm in front of a concave mirror of radius of curvature 36 cm. At what distance from the mirror should a screen be placed in order to obtain a sharp image? Describe the nature and size of the image. If the candle is moved closer to the mirror, how would the screen have to be moved?

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MODERN PUBLICATION-UNIT TEST -06-EXERCISE
  1. A small candle, 2.5 cm in size is placed at 27 cm in front of a concav...

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  2. To get five images of a single object, one should have two plane mirro...

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  3. A motor car is fitted with a convex driving mirror of focal length 20 ...

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  4. An experiment is performed to find the refractive index of glass using...

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  5. A transparent solid cylindrical rod has a refractive index of (2)/(sqr...

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  6. In an optics experiment, with the position of the object fixed, a stud...

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  7. A student measures the focal length of a convex lens by putting an obj...

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  8. Which of the following phenomenon is used in optical fiber?

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  9. The refractive index of water is 4//3.How much time will light take to...

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  10. A plano convex lens of refractive index 1.5 and radius of curvature 30...

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  11. Two lenses of powers+15D and -5D are in contact with each other. What ...

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  12. A convex lens of refractive index 1.5 has a focal length of 18 cm in a...

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  13. The refractive indices of the crown glass for blue and red light are 1...

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  14. The total magnification produced by a compound microscope is 20,while ...

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  15. Explain with reason,how the resolving power of an astronomical telesco...

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  16. An initially parallel cylindical beam travels in a medium of refractiv...

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  17. An initially parallel cylindical beam travels in a medium of refractiv...

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  18. An initially parallel cylindical beam travels in a medium of refractiv...

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  19. What is the main condition to produce interference of light?

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  20. In Young's double slit experiment what is the shape of interference fr...

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  21. In a Young's double slit experiment,the intensity at a point,where the...

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